9f3d4da261c478876f27352ce1d925de35427323
[linux-2.6.git] / include / asm-powerpc / topology.h
1 #ifndef _ASM_POWERPC_TOPOLOGY_H
2 #define _ASM_POWERPC_TOPOLOGY_H
3 #ifdef __KERNEL__
4
5 #include <linux/config.h>
6
7 #ifdef CONFIG_NUMA
8
9 #include <asm/mmzone.h>
10
11 static inline int cpu_to_node(int cpu)
12 {
13         return numa_cpu_lookup_table[cpu];
14 }
15
16 #define parent_node(node)       (node)
17
18 static inline cpumask_t node_to_cpumask(int node)
19 {
20         return numa_cpumask_lookup_table[node];
21 }
22
23 static inline int node_to_first_cpu(int node)
24 {
25         cpumask_t tmp;
26         tmp = node_to_cpumask(node);
27         return first_cpu(tmp);
28 }
29
30 #define pcibus_to_node(node)    (-1)
31 #define pcibus_to_cpumask(bus)  (cpu_online_map)
32
33 /* sched_domains SD_NODE_INIT for PPC64 machines */
34 #define SD_NODE_INIT (struct sched_domain) {            \
35         .span                   = CPU_MASK_NONE,        \
36         .parent                 = NULL,                 \
37         .groups                 = NULL,                 \
38         .min_interval           = 8,                    \
39         .max_interval           = 32,                   \
40         .busy_factor            = 32,                   \
41         .imbalance_pct          = 125,                  \
42         .cache_hot_time         = (10*1000000),         \
43         .cache_nice_tries       = 1,                    \
44         .per_cpu_gain           = 100,                  \
45         .busy_idx               = 3,                    \
46         .idle_idx               = 1,                    \
47         .newidle_idx            = 2,                    \
48         .wake_idx               = 1,                    \
49         .flags                  = SD_LOAD_BALANCE       \
50                                 | SD_BALANCE_EXEC       \
51                                 | SD_BALANCE_NEWIDLE    \
52                                 | SD_WAKE_IDLE          \
53                                 | SD_WAKE_BALANCE,      \
54         .last_balance           = jiffies,              \
55         .balance_interval       = 1,                    \
56         .nr_balance_failed      = 0,                    \
57 }
58
59 extern void __init dump_numa_cpu_topology(void);
60
61 #else
62
63 static inline void dump_numa_cpu_topology(void) {}
64
65 #include <asm-generic/topology.h>
66
67 #endif /* CONFIG_NUMA */
68
69 #endif /* __KERNEL__ */
70 #endif  /* _ASM_POWERPC_TOPOLOGY_H */